Type-writing machine.



G. H. SHEPARD.

TYPE WRITING MACHINE.

APPLICATION rum) FEB.6,1902.

Patented Sept. 14, 1909."

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G. H. SHEPARD. TYPE WRITING MACHINE.

APPLIOATION FILED FEB.6,1902,

93%; Q0, Patented Sept. 14, 1909.

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MTNEESEE CHARLES H. SHEPARD, ()1? NEW YDBK, N. Y. ASSI'ENGR Ki t "W'YUKGFF, EifiAEtEANS EENE I DICT, F ILIGN, NEW YQBK, A GORPUZEJATEGE? 53?! Nlfiilii "ZTGERE:

TYTPE -WRITING MELCHIN Specification of Letters "Eetc t .epplicetlon filed February s, 196.23. Se is l fe. 9""

To all whom it may concern:

Be it known that l, CHAnLEs H. SHEPARD. citizen of theUnited Stet-es, and resident or" the borough of Brooklyn, city of New York,

in the county of Kings and State of New a speedy, simple and eilicient carriage, feed like reference characters indicate corresponding parts in the various views, Figure or escepement mechanism; I o the above and other ends WlHCh w ll appear in the following description, my'inrentihn consistsin the novel constructions and arrangements and combinations of parts to he hereinafter described and particularly pointed out in the appended claims.

In the accompanying drawings, wherein 1 is a vertical sectional View partly in. sec tion of one form of typewriting machine embodying my invention; the section being taken from front to rear of the machine. Fig. 2 is an enlarged detail rear'elevntion of the carriage feed orescapunent mechanism. Fig. 3 is a transverse horizontal sectional view of a portion of the some, the section being' taken on the line a; :2; of Fig. 2 and loolringin the direction of the arrow at said line. Fig. 4 is an enlarged detail rear elevation.

with parts broken away, of the carriage feed or escnpement mechanism; the view showing a different disposition of the parts from that illustrated in Fig. 2. Fig. 5 is a detail edge.

view of the stepping or feeding dog.

In varioils views, parts have been omitted or broken away to more clearly illustrate otherfeatures of the structure.

I have shown my invention applied to e No. 6' Remington machine, though it should be understood that the invention or any one or more of the separate features thereof may be applied to any other character of typewriting machine. p

The frame 1. is surmounted by a top plate 2 which supports uprights studs 3, 4, to which the traverse rods 5. 6. respectively. are connected. The usual carriage 7 moves from end to end of the machine on the traverse rolls and ca ries a. platen frame 8 in which a platen 9 ismonnted to revolve. The front end of the platen frame is snpporied upon at each end. pro i shift rod 10 which is connected to the upper ends of upright sniiit ill, located near the opposite ends of the machine and secured to :1 reel: sl 1 h. a is mlopted to rock in hoe gs termed er: s supports 14 which. depend from the top plate 2. The shift rod is niovcrl' trens sel y, in" any snitch inehnen to more the platen frame and piston in a. direction trensi'ers o its food to change case position e :eof. This trensver "i movement of the platen and its frame is limited. stop pins 15 carried in the nsnsi .r inner the carriage 'l' at each end there and which cooperate withv ti H pivot rod or shaft 16 wh ichpivotnllyccnnecu the pleten frame to the earrings 7 tin: i 'h the nsnel linlrs 1'2".

u (5 (.lhorncter key levers 3.8 are fnlcrumecl at 19- m the frame 1 or the machine and are to a link 22 vvl'iich is turn connected to it: A spacing key or.

type her or carrier 23.

bar 24 is coni'i-ected at each end to a key lever 25, loothot. which are likewise fulcrumecl st 19 upon opposite sides of the keyboard and are provided with restoring springs 21. The partsthus fer described constitute a portion of the well-lrnown lie. ('3 Remington machine and o more elaborate description thereof is deemed unnecessary.

Extending trensversel z beneath the key levers 18 and 2.5 is usual universal her 30 which has connected thereto at each end s link 31; int. links being connected.- zit theirupper ends to a. transversely extending her 33 which is carried by an arm 34 that extends from a roc shaft/35 mounted in beerings in the arms 36 that are secured st 37 to s pletolihe bracket 38 whichentends downwardly from the top plate 2. The rock shaft 35 is restored to the normal position by a spring 39 which is secured at one end 40 to the bracket 38end is secured. at its opposite end 41 to the rock shaft. Extending renrn'nrdlv from the reel: shaftis a crank arm t? which is pivoted at to n. link i ithnt in turn is pivoted. 4 :5 to a two-nrm lever 46 that is pivoted at ill to :1 depending bifurcnted bracket arm that errtcnc s downwerdly This link 52 is preferably made in two port'sloo andthe parts are provided one with a right hand screw-thread and the other with a lefthand screw-thread which cooperate with a turn buckle 53 that unites the two sectionsof the link and constitute means for lengthening and shortening the link so as to vary the throw or regulate the movement of the feed dog 54, which is pivoted at 55 to said link. This feed dog 54; is pivoted at 56 to a so-called feed dog carrier 57 that is in the nature of a reciprocatory plate and is termed with tongues 58 (Fig. 3) which take in suit able ways 59 formed by guide pieces 60 :which are secured by screws 61 to the plate- 67 to be moved toward and away from the feed or seen ement wheel. The feed dog 67 may be ma e as a single rigid piece, though I prefer to make it in two parts which are pivotally united at 68, the feed dog as a whole being pivoted at 69 to a fixed portion of the machine, such as one of the glide pieces 60. The two parts of the feeddog 67 are normally main'talned in a fixed relation one, to another by a leaf spring 70 which is secured to one of the parts at 71 and bears against both sections or parts of the feed dog upon opposite sides of the pivot 68 which unites them thus exerting a pressure to maintain the parts against movement one with relation to the other.

While Thave referred. tothe dogs 54 and 67 as feed dogs, the dog 5% may be more specifically referred to a stepping dog, whereas the dog 67 may be more specifically designated as a holding dog. From an inspection of the drawings, it will be observed that the stepping dog is located beneath the center of the feed wheel 72 and moves in substantially a radial path toward and away from the feed wheel, as distinguished from an oscillating movement, though it has a slight independent ivotal movement on its pivot 56, whereas t e holding dog 67 only oscillates on its pivot 69 into and out of contact with the escapement wheel and is located in advance of the stepping dog, considered with relation to the reed movement of'thc, .escapement wheel, and moves at substantially right angles to the direction of move ment of the stepping dog. Furthermore, the stepping dogo i and holding dog 67 move in the same plane with the eseapement wheel. Pivoted at 73 to one of the guide pieces 60 is a blocking pawl 74, the face 75 of which 00- y stop sea, 1 oo operates with the back of each of the teeth of the escapcment whcel to prevent a movement thereof in a direction reverse to that of its cooperating position by a weighted arm 76 which causes it to bear against the teeth and the pawl is moved to one side during the rotation of the escapement wheel in the direction of its feed by the teeth of the wheel contacting with the inclined face 77 of the pawl, as indicated at Fig. 4:. The feed wheel '72 is of the usual construction employed in the No. '6 Remington typewriting machine, and comprises the wheel 72 which is loosely maintained upon wheel 7 9 that is connected to one face thereof and coperates with pawls 80 which are pressed into engagement with the teeth of the ratchet wheel by springs 81, each of from. This collar is provided with screwthreaded o enings in which the set screws 85 engage and are adapted to bear ,upon the. shaft 78'to connect the housing to the shaft. The shaft 78 is niounted'iu a bearing 86 which is secured at 87 to the top plate 2 of the machine. The forward end of the rock shaft is provided. with the usual teed pinion 88 that is adaptedfto mesh with a feed rack 89 that is carried upon" arms 90 which are pivoted at 91 to the carriage 7. The disposition of the teeth onthe ratchet wheel 79 and the cot1e emapement wheel-72 in the direction of its feed, will-cause a feed movement of the carriage, whereas when the carriage is moved in a direction opposite to that of its feed or from left to'right, the shaft 78 will be ro- Figs. 2 and 4, thus rotating the housing 83 in the same direction and causing the pawls 80 to ride freely over the teeth of the cooperating ratchet wheel, thereby permitting the feed wheel to remain fixed against moi7ethe carriage. The pawl 7 4 will maintain the movement thatmight take plac'ethrough the frictional contact or the cooperating ratchet wheel.

The tension of the spring 39 of the rock shaft 35 tends normally to maintain the escapement mechanism in the position shown the stepping dog 54 against the pin 62, its tension is overcome by the carriage spring the stop or pin 63.

In operation, a depression ofa character its -teed. This pawl 74: is maintained inv the inner ends of these screws tated in reverse direction or in a direction opposite to that indicated by the arrow in,

feed wheel against any accideg tal reverse in Fig. 2, which is the position 'of'rcst, and while the tendency of said spring is to force.

the shaft 7 8 and is provided with a ratchet which is secured at 82 to a cylindrical housing 83 that has a collar 84 projecting thereo cratingpawls 8G is such that a rotation of ment during this movement of restoration of pawls 80 with the i 92, exerted through the escapement wheel and the dog is normally maintained against key or the spacing key will oilect a down- E ward movement of the link 52, which is effective to move the stepping dog and mam-c the carrier 5.? from the positions shown in Fig. to those indicated in Fig. 4-, nndthe pin and slot connection between the dog 3:13P rier and the holding dog (5? will cause simultaneous movement of the holding dog toward and into the path of the advancing tooth of the escapement wheel. The movements of the parts just descriheifl will oemit a slight rotation oi the escapement wheel to the position shown in l 4:, and the stepping dog being :it this time out of Contact with the escapeinent "wheel and therefore. no longer under compression of the carriage spring, will be forced by the spring 39 of the rock shaft 3f aronnd its pivot 56 and into engagement with the stop or pin (52 as shown in F 4v This movement of the stepping independently of its cnrrier is etiective to it to clear the tooth with which it was in contact and to tend to pro-Zest it'into the path of the next adjacent tooth of the crica ioment Wheel, as shown in f i 4. of the parts just descril'ied are etlected by a depression. any of the clniracter keys or the spacing; key and when the operator re leasos the key the spring 39 will move the stepping do and its C HIlCI to the position shown in Fig; 2, and the ment Wheel after it has moved StlfllClQIl'tIlrf far to cited a letter space feed of the carrin g'e. This some movement of the stepping dog and its carrier is elfective to move the holding: dog to the, disengaged position to permit this advance movementof the escapemont wheel under the tension of the carriage spring. During this disengaging movemoot ol' the hold inn dog the flat or working;

hire (3? theicot will he in the some piano or sohstzmtiully the same plane as the Workin time ol the engaged tooth ot the escape inc t wheel and will move in the general direction of movement of said tooth, as well as at substantially right angles thereto, or in other r-xords. the movcim-nt ot the dog is such that it may he i'csotv'(- ,l into two coinpont-nts, one of which is in the same direction as the motion oi the engaged tooth oi. the oscztpement wheel :1 ml the other of which is at right angles to the motion of the enc iigcd tooth. the p vot of said dog beingparnllel to the axis ot the escaneinent Wheel end remote from :1 line drawn tangent to the cscupcment wheel at the point fit which. the dos, engages said wheel, so that during the disiogoging movement of the holding dog, the mlvancing; movement; of theescspeim-ntwhccl takes phico. it wil therefore he sccn that ii rnpid and etliciont oscap'cment mechanism provided without the use of relatively beveled working faces on either The various movements,

stepping dog willarrest the advancing tooth of the escnpe-- the feed (logs or the teeth of the escepement wheel. it will likewise he observed that during the movement of the holding dog and n '21 from the escapement wheel, and in fact at all times. the Working time ofthe dog is in a plane which is either the. some or is substantially parallel with the plane of the working face of the next advancing tooth of the escopement wheel.

is pointed out. above thcneculior manner of mounting the holding do; and the relation of the parts axtlords an. advance or quick let-oil of the carriage when pressure on a iingerliey is released and during the return stroke of the key.

The e'ltect of the employment of the twoport holding dog 6?, the parts of which are nornnilly nniintained in a fixed relae tion by the spring 70, to cushion, so to/ speak. the contact between the advancing teeth of the escapemont wheel and the holding dog: llhns it will be seen that when the holding dog is moved into contact a tooth of the escnpcment wheel as it is advancing under the power of the carriage spring said Contact takes place during the down stroke on the finger key and the result of the employment of the spring is that the finger of the operator is relieved from shock of the advancing tooth of the escopeni'ontwheel hy the resilient action (if the spring i1) when the holding dog reaches contact with the escapeincnt wl'ieel. This is especially true where the operator has a long following stroke and it may or may not occur in the ordinary opera non of the nnichine depending upon various conditions. ltshonld he understood, h0wover, that the resilient; action 11st described is not essential to the operation of the escapenient mechanism and that the holding dog (57 may as before stated he made of a single rigid piece without in any my effecting the opei 'ation of the esciipcment as such;

While I have shown and described with considemhlc detail one form of ty 'icivriting nnichino embodying my invention it should ho understood thiit "various changes may he made without departing from the spirit of my low-union.

Having described my ii'nrention, what I claim as new and. desire to secure by Letters Patent is:-

l. in an escapemcnt mechanism for type-' cnpcmentwheel, ,1 dog normally engaged with said wheel, a dog normzi illy disengaged from said wheel, both of said dogs hoing' mounted for movement toward and away from said wheel in the plane th reof. and means for moving the working time or said normally disengaged dog toward tho wheel iii En (EPW115911 Phosod to the direction of mo- ;tion of the next :idvanoing tooth of said wheel and away from the wheel in a directionwith said tooth before the normally-engaged dog is brought into engagement with the wheel, thereby affording an advance of said' escapement wheel during the receding movement of said normally disengaged dog and before saiddog is out of engagement with said tooth. 4

2. In an escapement mechanism for typewriting machines, the combination of an escapement wheel, a holding dog and a stepping dog bot-h mounted for movement toward and away from the wheel in the plane thereof, and means for moving theworking face of the holding dog toward the wheel in a direction opposed to the direction of motion of the next advancing tooth of the wheel and away from the wheel in a direction with the tooth .before the other dog is brought into engagement with the wheel, tl'iereby all'ording an advance of the escapement wheel during the receding movement of said holding dog and before said holding dog is out of engagement with said tooth, the working face of the holding dog being at certain tunes in a plane which is the same as, and at all other times being substantially parallel with the plane of the-working face of the next advancing tooth oltthe escape-- mentwheel.

3. In an escapement mechanism fortypewriting machines, the combination of an escapenientwheel, and feed dogs which cooperate therewitl1,'the movement of oneof said dogs into and out of contact with said wheel being in the plane of the wheel and the movement thereof away from the wheel being partly in the direction of movement of the tooth of the wheel which is el'igagod by said dog and while said wheel is disengaged by the other dog, thus all'ording an advance of the escapement wheel during the receding movement of the first mentioned dog.

4.; In an escapemcnt mechanism for tvpe-t writing machines, the eomb-imitimi ofoai'i escapement Wheel, a radially movable stepping dog, and a holding dog, the movement of said holding dog into and out of contact with said wheel being in the plane" of the wheel and in directions respectively opposed to and with the direction of movement of the tooth of the wheel which is engaged by said holding dog and while the stepping dog is, out of engagementwith said wheel, and means for moving the holding dog toward the wheel when the stepping dog is moved,

away from it.

In an escapement mechanism for typewriting machines, the combination of an escapement wheel, a radially movable stepping dog, a holding dog, and means for controllingthe movement of one of said dogs by the movement of the other, the dogs moving into and out of engagement with the wheel in the same plane as the wheel, the disen- 5 gaging movement of the working face of an oscillating holding dog pivotally mounted indepemlently of the stepping dog to move in the same plane as the escapement wheel during the movement of the dog toward and away froin said wheel, and means positively controlled by the stepping dog for advancing the holding dog toward and withdrawing it from the working face of an oncoming tooth of the escapement wheel, the direction of the disengaging movement of the working face of the holding dog being partly in the direction of movement of the working face of the advancing tooth of the wheel which is engaged by said holding do.

w 7. In a typewriting machine, the combination of printing i1istrumenta'lities, keys therefor, acarria'ge, afecd wheel for said carriage, a feed dog which is normally in engagement with said feed wheel, and a feed dog which is normally out of engagement with said feed wheel, said feed dogs being independently mounted and the normally engaged dog having a limited movement independently of the other which affords a, movement of the. normally engaged dog into the path of the teeth on the feed wheel before the normally disengaged dog is released from the .vheel.

8. In a typcwriting machine, the combination of a carriage, a feed wheel therefor, a stepping dog and a holding dog which is mounted independently of but is controlled. by the movement of the stepping dog, means whereby a slight advance movement of the feed wheel is afforded when the stepping dog is disengaged therefrom, and for moving the stepping dog into the pathof the teeth of the feed wheel before the holding dog receives a movement of disengagement therefrom.

9. In a typewriting machine, the combination of a carriage, an escapement wheel therefor, a. stepping dog, a holding dog which is controlled by the movement of the stepping dog and both of which dogs move in the same plane as the escapement wheel, means for afiording a movement of the ste ping dog towardthe escapement wheel-1n advance of a disengaging movement of the holding dog, and adjustable means directly connected to said stepping dog for regulating the timing 01 this advance movement of the stepping dog.

10. In a typewriting machine, the combination of a arriage, reed wheeltherefor, feed dogs that move in directions at substantially ight angles to each other into and out of engagement with said wheel, the movement of one of which is controlled by the movement ofthe other, means positively and directly connected to the controlling dog for moving it, and adjustable means for regulating the throw of the controlling do 11. In a typewriting machine, the combination of a carriage, a feed wheel therefor, feed dogs, key act dated means for moving said feed dogs, and. resilient means cooperating with one of said feed dogs for relieving the fingers from shock of the advancin tooth of the feed wheel when it is arreste by the feed dog with. which the resilient means cooperate.

132. In a typewriting machine, the combination of a carriage, feed wheel therefor,

a stepping dog, a holding dog which is moved by the movement of said stepping dog and both of. which dogs move toward and away from said escapement wheel. in the plane thereof, key actuated means for moving the stepping dog and resilient means cooperating with said. holding dog for relieving the fingers from shock when the holding dog is moved by the finger keys.

13. In a typewriting machine, the combination of a powendriven carriage, an escapement wheel therefor, a'teed dog, the working face of which advances toward the oncoming tooth of the escapement wheel in a direction opposed to the direction of the feed movement or said oncoming tooth, and a. spring which normally maintains a fixed relation to the said. feed dog and the part which moves it.

14. In a typewriting machine, the combination cl? a carriage, a feed wheel which is operativcly connector thereto, a reciprocating dog carrier, a. stepping dog carried by said carrier and which moves radially toard and away from said wheel, an oscillating holding dog which is pivoted inde pendently of but is positively moved by said carrier during a movement of the stepping dog, and means connected directly to the stepping dog fOlfiHO'HHg it and saidcarrier.

15. In typewriting machine, the combination of a carriage, a feed wheel operatively connected thereto, a reciprocating dog carrier which is mounted to slidi in fixed hearings on the l ame oi": the machine and at. substantially right angles to the center of rotation of the feed Wheel, stepping dog carried raid carr er and having a llllllLQLl Vllll'iltv movement thereon, holdin; feed dog which positivel moved'by said reciprocating carrier, and means connected directly the stepping dog for moving it and the c v together in one direction and for @li OCtll'lg independent movement of said stepping dog in an opposite direction, and then moving the said dog and carrier together.

18. In a typewriting machine, the'combination or a carriage, a feed wheel operatively connected thereto, a reciprocating dog carrier, a feed dog carried by said carrier and having a limited vibratory move ment thereon, means connected to said feed ited distance independently of the carrier,

means for moving the said dog and carrier together, and a second feed dog which is positively moved by said carrier.

18. In a typewriting machine, the combination of a carriage, a feed wheel operatively connected thereto, a stepping (log'and an independently mounted holding dog which cooperate with said feed wheel and which are movable independently of each other for a limited distance, and means con trolled. through the stepping dog for positively moving the holding dog into and out of engagement with saidwheel and for atfording a feed movementof the wheel by the movement of. first one dog and'then the other into and out of engagement with said wheel.

19. Ina typewriting machine, the combination of a carriage, a feed wheel opera: tively'connected thereto, a stepping dog, a reciprocating carrier to which said stepping dog is pivoted and with relation to which it has an il'idependent movement for a limited distance, a holding dog which is operatively connected to said carrier and which is positively moyed thereby into and out of engagement with the feed wheel, and means directly connected to the stepping dog for moving it independently of the holding dog toward the feed wheel and for moving the carrier toetlect a movement of the holding movement of the other dog into and out of engagement with. the feed wheel.

21. In a typewritmg machine, the combination of a carriage, a feed wheel operatively connected thereto, a feed dog pivoted to a fixed portion of the machine, a second feed dog, a carrier upon which said second teed dog is carried, positive connections betvi-een said dogs, and key actuated means connected directly to the second teed dog to move it into and out of engagement with the feed wheel, and to afford by a positive movement an actuation of the first feed dog.

22. In a typewriting machine, the combination of a carriage, a feed wheel operatively connected thereto, a holding dog pivoted to a fixedport/ion. of the machine, a stepping dog, a movable carrier upon which saidstepping dog is carried, positive connections between said dogs, and key actuated means connected directly to the stepping dog to move it-into and out of engagement with thefeed wheel and to afiord by a positive movement an actuation of the holding dog.

23.- In a typcwriting machine, the combination of a carriage, a feed wheel operatively connected thereto, a holding dog pivoted to a fixed portion of the machine, and movable in the same plane as the feedwheel, a stepping dog which moves in the same plane as I the feed wheel, a reciprocating carrier upon which said stepping 'dog is carried, positive connections between said dogs, and key acc tuated means connected directly to the step ping dog to move it out of engagement with the feed wheel and then to afford by a positive movement through the carrier an actuationof the holding dog.

241.. In a typewriting machine, the combination of .a carriage, a cooperating feed wheel, a dog carrier, a stepping dog which is carried by said carrier and has a limited movement independently thereof, an inde pendently mounted holding dog which moves atsubstantially right angles to the stepping dog and in substantially the same plane as the feed wheel, positive connections between the carrier and holding dog, and means con.- nccted directly to the stepping dog for moving it and the carrier, whereby the stepping 1 dog may receive an imilependentmovement toward the feed wheel andflwill then cause 1 the holding dog to be-positively moved in an rocating dog carrier, a stepping dog pivoted opposite direction.

' 25. In a typewritmg machine, the combination of finger keys, a carriage, a teed wheel operatively connected thereto, a recipto said carrier and having a limited movement independently thereof, a holdin dog p voted to a fixed portion of the machlne, a pin and slot connection between the dog carrier and the holding dog, and means con trolled by the finger keys for moving the stepping dog.

26. In a typewriting machine, the combi:

nation of finger keys, a carriage, a.- feed ing dog.

. 27. In a typewritin-g machine, the combination of finger keys, a carriage, a feed wheel operatively connected thereto, a reciprocating dog carrier, a stepping dog pivoted to said carrier and having a limited movement independently thereof, key actuated moving means directly and positively con: nected to said stepping dog and effecting a' movement of the carrier through said stepping dog, a holding dog pivoted to a fixed portion of the machine and moving at an angle to-the stepping dog, the movement ofthe holding dog and stepping dog intoiand out of engagement with the feed wheel being in substantially thesame plane as the feed wheel; a a

28. In a typewriting machine, the combination of a power-driven carriage,-an escapes ment wheel, and cooperating escapement d'e-' vices comprising a feed dog the working face of which is at all times out by the plane of the eseapement wheel, said feed dog being mounted to move toward and away from the oncoming tooth of the escapement wheel,

the plane of said working face of the'd'og being at certain times coinciden .With and at all other times substantially parallel with the plane of the working face of said oncoming tooth of the escapement wheel.

Signed at the borough of Manhattan, city W I of New York, in the county of New York and State of New York, this fourth ,dayo February, A. D. 1902.

Witnesses K. V. DONOVAN, E. M. WELLS. 

